Fifty-four-forty or Fight
[ fif-tee-fawr-fawr-tee, -fohr- ]
/ ˈfɪf tiˌfɔrˈfɔr ti, -ˌfoʊr- /
U.S. History.
a slogan popular in 1846, especially among Democrats, who asserted U.S. ownership of the entire Oregon country, including the part that Great Britain claimed between 49° and 54° 40prime; N latitude.